Who voices Peter Griffin in 'Family Guy'?

Who voices Homer Simpson in 'The Simpsons'? Who voices Marge Simpson in 'The Simpsons'? Who voices Bart Simpson in 'The Simpsons'? Who voices Lisa Simpson in 'The Simpsons'? Who voices Stewie Griffin in 'Family Guy'? Who voices Lois Griffin in 'Family Guy'? Who voices Meg Griffin in 'Family Guy'? Who voices SpongeBob SquarePants in 'SpongeBob SquarePants'?